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# redMine - project management software
# Copyright (C) 2006-2007 Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
require 'redmine/scm/adapters/abstract_adapter'
require 'rexml/document'
module Redmine
module Scm
module Adapters
class DarcsAdapter < AbstractAdapter
# Darcs executable name
DARCS_BIN = "darcs"
class << self
def client_version
@@client_version ||= (darcs_binary_version || [])
end
def darcs_binary_version
cmd = "#{DARCS_BIN} --version"
version = nil
shellout(cmd) do |io|
# Read darcs version in first returned line
if m = io.gets.match(%r{((\d+\.)+\d+)})
version = m[0].scan(%r{\d+}).collect(&:to_i)
end
end
return nil if $? && $?.exitstatus != 0
version
end
end
def initialize(url, root_url=nil, login=nil, password=nil)
@url = url
@root_url = url
end
def supports_cat?
# cat supported in darcs 2.0.0 and higher
self.class.client_version_above?([2, 0, 0])
end
# Get info about the darcs repository
def info
rev = revisions(nil,nil,nil,{:limit => 1})
rev ? Info.new({:root_url => @url, :lastrev => rev.last}) : nil
end
# Returns an Entries collection
# or nil if the given path doesn't exist in the repository
def entries(path=nil, identifier=nil)
path_prefix = (path.blank? ? '' : "#{path}/")
path = '.' if path.blank?
entries = Entries.new
cmd = "#{DARCS_BIN} annotate --repodir #{@url} --xml-output"
cmd << " --match #{shell_quote("hash #{identifier}")}" if identifier
cmd << " #{shell_quote path}"
shellout(cmd) do |io|
begin
doc = REXML::Document.new(io)
if doc.root.name == 'directory'
doc.elements.each('directory/*') do |element|
next unless ['file', 'directory'].include? element.name
entries << entry_from_xml(element, path_prefix)
end
elsif doc.root.name == 'file'
entries << entry_from_xml(doc.root, path_prefix)
end
rescue
end
end
return nil if $? && $?.exitstatus != 0
entries.compact.sort_by_name
end
def revisions(path=nil, identifier_from=nil, identifier_to=nil, options={})
path = '.' if path.blank?
revisions = Revisions.new
cmd = "#{DARCS_BIN} changes --repodir #{@url} --xml-output"
cmd << " --from-match #{shell_quote("hash #{identifier_from}")}" if identifier_from
cmd << " --last #{options[:limit].to_i}" if options[:limit]
shellout(cmd) do |io|
begin
doc = REXML::Document.new(io)
doc.elements.each("changelog/patch") do |patch|
message = patch.elements['name'].text
message << "\n" + patch.elements['comment'].text.gsub(/\*\*\*END OF DESCRIPTION\*\*\*.*\z/m, '') if patch.elements['comment']
revisions << Revision.new({:identifier => nil,
:author => patch.attributes['author'],
:scmid => patch.attributes['hash'],
:time => Time.parse(patch.attributes['local_date']),
:message => message,
:paths => (options[:with_path] ? get_paths_for_patch(patch.attributes['hash']) : nil)
})
end
rescue
end
end
return nil if $? && $?.exitstatus != 0
revisions
end
def diff(path, identifier_from, identifier_to=nil)
path = '*' if path.blank?
cmd = "#{DARCS_BIN} diff --repodir #{@url}"
if identifier_to.nil?
cmd << " --match #{shell_quote("hash #{identifier_from}")}"
else
cmd << " --to-match #{shell_quote("hash #{identifier_from}")}"
cmd << " --from-match #{shell_quote("hash #{identifier_to}")}"
end
cmd << " -u #{shell_quote path}"
diff = []
shellout(cmd) do |io|
io.each_line do |line|
diff << line
end
end
return nil if $? && $?.exitstatus != 0
diff
end
def cat(path, identifier=nil)
cmd = "#{DARCS_BIN} show content --repodir #{@url}"
cmd << " --match #{shell_quote("hash #{identifier}")}" if identifier
cmd << " #{shell_quote path}"
cat = nil
shellout(cmd) do |io|
io.binmode
cat = io.read
end
return nil if $? && $?.exitstatus != 0
cat
end
private
# Returns an Entry from the given XML element
# or nil if the entry was deleted
def entry_from_xml(element, path_prefix)
modified_element = element.elements['modified']
if modified_element.elements['modified_how'].text.match(/removed/)
return nil
end
Entry.new({:name => element.attributes['name'],
:path => path_prefix + element.attributes['name'],
:kind => element.name == 'file' ? 'file' : 'dir',
:size => nil,
:lastrev => Revision.new({
:identifier => nil,
:scmid => modified_element.elements['patch'].attributes['hash']
})
})
end
# Retrieve changed paths for a single patch
def get_paths_for_patch(hash)
cmd = "#{DARCS_BIN} annotate --repodir #{@url} --summary --xml-output"
cmd << " --match #{shell_quote("hash #{hash}")} "
paths = []
shellout(cmd) do |io|
begin
# Darcs xml output has multiple root elements in this case (tested with darcs 1.0.7)
# A root element is added so that REXML doesn't raise an error
doc = REXML::Document.new("<fake_root>" + io.read + "</fake_root>")
doc.elements.each('fake_root/summary/*') do |modif|
paths << {:action => modif.name[0,1].upcase,
:path => "/" + modif.text.chomp.gsub(/^\s*/, '')
}
end
rescue
end
end
paths
rescue CommandFailed
paths
end
end
end
end
end
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